GB1549630A - Methods of and apparatus for determining parameters of clad optical fibres - Google Patents
Methods of and apparatus for determining parameters of clad optical fibresInfo
- Publication number
- GB1549630A GB1549630A GB52422/76A GB5242276A GB1549630A GB 1549630 A GB1549630 A GB 1549630A GB 52422/76 A GB52422/76 A GB 52422/76A GB 5242276 A GB5242276 A GB 5242276A GB 1549630 A GB1549630 A GB 1549630A
- Authority
- GB
- United Kingdom
- Prior art keywords
- methods
- optical fibres
- determining parameters
- clad optical
- clad
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/41—Refractivity; Phase-affecting properties, e.g. optical path length
- G01N21/412—Index profiling of optical fibres
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/08—Measuring arrangements characterised by the use of optical techniques for measuring diameters
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- General Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Testing Of Optical Devices Or Fibers (AREA)
- Light Guides In General And Applications Therefor (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US05/641,697 US4027977A (en) | 1975-12-17 | 1975-12-17 | Method and apparatus for determining ratio of core radius to cladding radius in clad optical fibers |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1549630A true GB1549630A (en) | 1979-08-08 |
Family
ID=24573490
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB52422/76A Expired GB1549630A (en) | 1975-12-17 | 1976-12-15 | Methods of and apparatus for determining parameters of clad optical fibres |
Country Status (9)
Country | Link |
---|---|
US (1) | US4027977A (en) |
JP (1) | JPS5274363A (en) |
BE (1) | BE849386A (en) |
CA (1) | CA1107493A (en) |
DE (1) | DE2656520C3 (en) |
FR (1) | FR2335824A1 (en) |
GB (1) | GB1549630A (en) |
NL (1) | NL171928C (en) |
SE (1) | SE416498B (en) |
Families Citing this family (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4168907A (en) * | 1977-12-30 | 1979-09-25 | Bell Telephone Laboratories, Incorporated | Method for inspecting transparent rods |
US4227806A (en) * | 1978-10-16 | 1980-10-14 | Western Electric Company, Inc. | Methods for non-destructively determining parameters of an optical fiber preform |
JPS5724600U (en) * | 1980-07-16 | 1982-02-08 | ||
US4492463A (en) * | 1982-03-29 | 1985-01-08 | At&T Bell Laboratories | Method for inspecting multilayer transparent rods |
JPS5930870U (en) * | 1982-08-23 | 1984-02-25 | 三菱重工業株式会社 | Fall container protection structure |
US4650322A (en) * | 1984-09-07 | 1987-03-17 | The Board Of Trustees Of The Leland Standford, Jr. University | Method and means for high resolution measurement of fiber diameter |
FR2572805A1 (en) * | 1984-11-06 | 1986-05-09 | Thomson Csf | METHOD FOR MEASURING THE CENTERING OF A CYLINDRICAL BAR IN A TRANSPARENT CYLINDRICAL COATING AND DEVICE FOR IMPLEMENTING SAID METHOD |
FR2584180A2 (en) * | 1985-06-28 | 1987-01-02 | Thomson Csf | Device for measuring the centring of a cylindrical specimen in a transparent cylindrical coating |
US4662743A (en) * | 1985-11-01 | 1987-05-05 | Sumitomo Electric Research Triangle, Inc. | Method of measuring the geometry of optical fibers |
AU585728B2 (en) * | 1986-08-15 | 1989-06-22 | Sumitomo Electric Industries, Ltd. | Method and apparatus of measuring outer diameter and structure of optical fiber |
US5176731A (en) * | 1987-06-10 | 1993-01-05 | U.S. Philips Corp. | Device for performing measurements on a transparent object, method of manufacturing a fiber and fiber manufactured by means of said method |
US4952226A (en) * | 1989-02-27 | 1990-08-28 | American Telephone And Telegraph Company | Lightguide coating control |
US4957526A (en) * | 1989-06-02 | 1990-09-18 | At&T Bell Laboratories | Optical fiber coating control process |
US4973343A (en) * | 1989-06-02 | 1990-11-27 | At&T Bell Laboratories | Optical fiber coating control apparatus |
FR2651312B1 (en) * | 1989-08-25 | 1992-01-17 | France Etat | METHOD AND DEVICE FOR GEOMETRIC CHARACTERIZATION OF TRANSPARENT TUBES. |
US5309221A (en) * | 1991-12-31 | 1994-05-03 | Corning Incorporated | Measurement of fiber diameters with high precision |
CA2083969A1 (en) * | 1991-12-31 | 1993-07-01 | Leslie James Button | Measurement of fiber diameters and detection of defects |
US5283628A (en) * | 1991-12-31 | 1994-02-01 | Corning Incorporated | Method for measuring diameters of non-circular fibers |
EP0905477A3 (en) * | 1997-09-25 | 2000-08-09 | Corning Incorporated | Methods and apparatus for detecting core/cladding interfaces in optical waveguide blanks |
SE523329C2 (en) * | 2000-06-20 | 2004-04-13 | Ericsson Telefon Ab L M | Determination of optical fiber type |
FR2852389B1 (en) * | 2003-03-12 | 2005-05-13 | Commissariat Energie Atomique | METHOD FOR MEASURING THREE DIMENSIONAL OBJECTS BY OPTICAL OMBROSCOPY WITH A SINGLE VIEW |
JP4923255B2 (en) * | 2006-11-07 | 2012-04-25 | 国立大学法人横浜国立大学 | Method for measuring diameter of cylindrical body, refractive index, distance between central axes, and angle formed between incident optical axis and apparatus using the same |
CN102297655B (en) * | 2010-06-24 | 2013-04-03 | 上海电缆研究所 | Testing method for performing bidirectional positioning and synchronous testing on fiber end face |
US10901228B2 (en) * | 2017-06-27 | 2021-01-26 | The Boeing Company | Cavity with curved beam replicator and method of determining a characteristic of a medium therein |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3797939A (en) * | 1968-08-09 | 1974-03-19 | T Pryor | Diffractographic measurement of profile |
US3659950A (en) * | 1969-07-14 | 1972-05-02 | Iris Corp | Laser apparatus for detecting the size and form of filamentary material by measuring diffracted light |
US3709610A (en) * | 1970-05-20 | 1973-01-09 | Holobeam | Method and apparatus for measuring and controlling the thickness of a filament or the like |
US3879128A (en) * | 1973-08-15 | 1975-04-22 | Bell Telephone Labor Inc | Method and apparatus for measuring the refractive index and diameter of optical fibers |
US3925733A (en) * | 1974-05-24 | 1975-12-09 | Us Navy | Maximum pulse density detector |
US3982816A (en) * | 1974-06-21 | 1976-09-28 | Western Electric Company, Inc. | Method for measuring the parameters of optical fibers |
-
1975
- 1975-12-17 US US05/641,697 patent/US4027977A/en not_active Expired - Lifetime
-
1976
- 1976-11-29 CA CA266,824A patent/CA1107493A/en not_active Expired
- 1976-12-06 SE SE7613667A patent/SE416498B/en unknown
- 1976-12-13 FR FR7637489A patent/FR2335824A1/en active Granted
- 1976-12-14 BE BE173242A patent/BE849386A/en unknown
- 1976-12-14 DE DE2656520A patent/DE2656520C3/en not_active Expired
- 1976-12-15 GB GB52422/76A patent/GB1549630A/en not_active Expired
- 1976-12-15 NL NLAANVRAGE7613917,A patent/NL171928C/en not_active IP Right Cessation
- 1976-12-16 JP JP51150427A patent/JPS5274363A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
US4027977A (en) | 1977-06-07 |
NL171928C (en) | 1983-06-01 |
CA1107493A (en) | 1981-08-25 |
JPS5274363A (en) | 1977-06-22 |
DE2656520B2 (en) | 1980-09-18 |
DE2656520C3 (en) | 1981-07-23 |
SE7613667L (en) | 1977-06-18 |
JPS5638898B2 (en) | 1981-09-09 |
NL7613917A (en) | 1977-06-21 |
BE849386A (en) | 1977-04-01 |
SE416498B (en) | 1981-01-05 |
FR2335824B1 (en) | 1981-12-24 |
DE2656520A1 (en) | 1977-06-30 |
FR2335824A1 (en) | 1977-07-15 |
NL171928B (en) | 1983-01-03 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PCNP | Patent ceased through non-payment of renewal fee |